Its one of the fields in 0x51, can't remember which. Its extracted from the EXE in JBBE, using BNCSutil, but its usually requested from BNLS in remote-hashing bots.
Its one of those stupid things that can be done locally yet it outsourced to BNCS, such as key hashing, password hashing, version bytes, etc. The only thing BNLS should ever be used for is CheckRevision, which is why I'm a fan of RCRS and debated implementing it in my bot before BNLS (neither of which ever got added, if you're wondering).